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What is Physics?

What is Physics?. Physics is A branch of science that involves the study of the physical world: energy , matter , and how they are related. SI Base Units. KNOW THESE!!!. Prefixes used with SI Units Know N ano to Kilo. Let’s Practice. METRIC CONVERSIONS.

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What is Physics?

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  1. What is Physics? Physics is A branch of science that involves the study of the physical world: energy, matter, and how they are related.

  2. SI Base Units KNOW THESE!!!

  3. Prefixes used with SI UnitsKnow Nano to Kilo

  4. Let’s Practice METRIC CONVERSIONS

  5. How many megahertz is 750 kilohertz? • 0.75 MHz

  6. Convert 5021 centimeters to kilometers. • 5.021x10-2 km

  7. How many seconds are in a leap year? • 31,622,400 s

  8. Convert the speed 5.30 m/s to km/h. • 19.08 km/h

  9. Your Turn To Investigate • Observations: • Circle the Quantifiable Observations • Given the instruments we have, what can we measure? __________________________________________________________________________

  10. Precision vs Accuracy • What will we measure? How precise can we be? Why? • Hypothesis:

  11. Design Your Own Experiment • Purpose:________________________________________________________________________________________________________ • Procedure:

  12. Data: (table and graph form)

  13. What is the independent variable? _________ • What is the dependent variable? _________ • Conclusion: _________________________________________________________________________________________________________________________________________________________________________________________

  14. Describing Motion • Motion Diagrams--- a series of images showing the positions of a moving object at equal time intervals • Particle Motion--- a simplified version of a motion diagram in which the object is replaced by a series of single points -size of the object must be much less than the distance it moves

  15. Try: Motion Diagrams • Draw a motion diagram a tennis ball dropped at three different heights (use same time scale for each, relative estimation) and position the diagrams side by side one another for easy comparison. • What reminds constant? __________________________

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